package com.itheima.jicheng;

public class Test {
    public static void main(String[] args) {
        Zi zi = new Zi();
        zi.sing();
    }
}
class Fu{
    int i=10;
}
class  Zi extends Fu{
    int i=20;
    public void sing(){
        int i=30;
        System.out.println(i);
        System.out.println(this.i);
        System.out.println(super.i);
    }
}
